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LTC1484I

Description
LINE TRANSCEIVER, PDSO8
Categorysemiconductor    Analog mixed-signal IC   
File Size219KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC1484I Overview

LINE TRANSCEIVER, PDSO8

LTC1484I Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals8
Minimum operating temperature-40 Cel
Maximum operating temperature85 Cel
Processing package description0.150 INCH, PLASTIC, SOP-8
each_compliYes
stateActive
Interface TypeLINE TRANSCEIVER
Differential outputYES
Number of drive digits1
Input propertiesDIFFERENTIAL SCHMITT TRIGGER
Interface standardsEIA-422; EIA-485
jesd_30_codeR-PDSO-G8
jesd_609_codee0
moisture_sensitivity_level1
ut_swing_mi1.5 V
utput_low_current_max0.0040 Am
Packaging MaterialsPLASTIC/EPOXY
ckage_codeSOP
ckage_equivalence_codeSOP8,.25
packaging shapeRECTANGULAR
Package SizeSMALL OUTLINE
eak_reflow_temperature__cel_235
wer_supplies__v_5
qualification_statusCOMMERCIAL
eceive_delay_max200 ns
Number of receiver bits1
seated_height_max1.75 mm
sub_categoryLine Driver or Receivers
Maximum supply voltage0.7000 mA
Rated supply voltage5 V
Minimum supply voltage4.75 V
Maximum supply voltage5.25 V
surface mountYES
CraftsmanshipCMOS
Temperature levelINDUSTRIAL
terminal coatingTIN LEAD
Terminal formGULL WING
Terminal spacing1.27 mm
Terminal locationDUAL
ime_peak_reflow_temperature_max__s_20
smit_delay_max60 ns
length4.9 mm
width3.9 mm
LTC1484
Low Power
RS485 Transceiver
with Receiver Fail-Safe
FEATURES
s
DESCRIPTIO
s
s
s
s
s
s
s
s
s
s
s
No Damage or Latchup to
±
15kV ESD (Human
Body Model), IEC-1000-4-2 Level 4 Contact (
±
8kV)
and Level 3 (
±
8kV) Air Gap Specifications
Guaranteed High Receiver Output State for Floating,
Shorted or Terminated Inputs with No Signal
Present
Drives Low Cost Residential Telephone Wires
Low Power: I
CC
= 700µA Max with Driver Disabled
I
CC
= 900µA Max for Driver Enable with No Load
20µA Max Quiescent Current in Shutdown Mode
Single 5V Supply
– 7V to 12V Common Mode Range Permits
±7V
Ground Difference Between Devices on the Data Line
Power Up/Down Glitch-Free Driver Outputs
Up to 32 Transceivers on the Bus
Pin Compatible with the LTC485
Available in 8-Lead
MSOP,
PDIP and SO Packages
The LTC
®
1484 is a low power RS485 compatible trans-
ceiver. In receiver mode, it offers a fail-safe feature which
guarantees a high receiver output state when the inputs
are left open, shorted together or terminated with no
signal present. No external components are required to
ensure the high receiver output state.
Both driver and receiver feature three-state outputs with
separate receiver and driver control pins. The driver
outputs maintain high impedance over the entire com-
mon mode range when three-stated. Excessive power
dissipation caused by bus contention or faults is pre-
vented by a thermal shutdown circuit that forces the
driver outputs into a high impedance state.
Enhanced ESD protection allows the LTC1484 to with-
stand
±15kV
(human body model), IEC-1000-4-2 level 4
(±8kV) contact and level 3 (±8kV) air discharge ESD
without latchup or damage.
The LTC1484 is fully specified over the commercial and
industrial temperature ranges and is available in 8-lead
MSOP, PDIP and SO packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
Battery-Powered RS485/RS422 Applications
Low Power RS485/RS422 Transceiver
Level Translator
TYPICAL APPLICATIO
RS485 Interface
LTC1484
RO1
RE1
DE1
D
DI1
GND1
GND2
1484 TA01
LTC1484
V
CC1
V
CC2
B2
120Ω
120Ω
A2
D
R
RO2
RE2
DE2
DI2
B1
A1
Dl1
R
B2
A2
RO2
Dl1
↑↓
Dl2 = 0
RE1 = RE2 = 0
U
Driving a 2000 Foot STP Cable
DE1 = V
CC
DE2 = 0
1484 TA01a
U
U
1

LTC1484I Related Products

LTC1484I LTC1484IS8 LTC1484IN8 LTC1484CN8 LTC1484CS8 LTC1484CMS8 LTC1484C LTC1484
Description LINE TRANSCEIVER, PDSO8 LINE TRANSCEIVER, PDSO8 LINE TRANSCEIVER, PDSO8 LINE TRANSCEIVER, PDSO8 LINE TRANSCEIVER, PDSO8 LINE TRANSCEIVER, PDSO8 LINE TRANSCEIVER, PDSO8 LINE TRANSCEIVER, PDSO8
Number of functions 1 1 1 1 1 1 1 1
Number of terminals 8 8 8 8 8 8 8 8
Minimum operating temperature -40 Cel -40 °C -40 °C - - - -40 Cel -40 Cel
Maximum operating temperature 85 Cel 85 °C 85 °C 70 °C 70 °C 70 °C 85 Cel 85 Cel
Differential output YES YES YES YES YES YES YES YES
Input properties DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER
Interface standards EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485
Number of receiver bits 1 1 1 1 1 1 1 1
Minimum supply voltage 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V
surface mount YES YES NO NO YES YES YES YES
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL COMMERCIAL COMMERCIAL COMMERCIAL INDUSTRIAL INDUSTRIAL
Terminal form GULL WING GULL WING THROUGH-HOLE THROUGH-HOLE GULL WING GULL WING GULL WING GULL WING
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
width 3.9 mm 3.899 mm 7.62 mm 7.62 mm 3.899 mm 3 mm 3.9 mm 3.9 mm
Maximum supply voltage 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V
length 4.9 mm 4.9025 mm - - 4.9025 mm 3 mm 4.9 mm 4.9 mm
Brand Name - Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology - -
Is it Rohs certified? - incompatible incompatible incompatible incompatible incompatible - -
Maker - Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) - -
Parts packaging code - SOIC DIP DIP SOIC MSOP - -
package instruction - 0.150 INCH, PLASTIC, SOP-8 DIP, DIP8,.3 DIP, DIP8,.3 SOP, SOP8,.25 PLASTIC, MSOP-8 - -
Contacts - 8 8 8 8 8 - -
Manufacturer packaging code - S8 N N S8 MS8 - -
Reach Compliance Code - _compli _compli not_compliant not_compliant not_compliant - -
ECCN code - EAR99 EAR99 EAR99 EAR99 EAR99 - -
Number of drives - 1 1 1 1 1 - -
Interface integrated circuit type - LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER - -
JESD-30 code - R-PDSO-G8 R-PDIP-T8 R-PDIP-T8 R-PDSO-G8 R-PDSO-G8 - -
JESD-609 code - e0 e0 e0 e0 e0 - -
Humidity sensitivity level - 1 1 1 1 1 - -
Minimum output swing - 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V - -
Maximum output low current - 0.004 A 0.004 A 0.004 A 0.004 A 0.004 A - -
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY - -
encapsulated code - SOP DIP DIP SOP TSSOP - -
Encapsulate equivalent code - SOP8,.25 DIP8,.3 DIP8,.3 SOP8,.25 TSSOP8,.19 - -
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR - -
Package form - SMALL OUTLINE IN-LINE IN-LINE SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH - -
Peak Reflow Temperature (Celsius) - 235 NOT SPECIFIED NOT SPECIFIED 235 235 - -
power supply - 5 V 5 V 5 V 5 V 5 V - -
Certification status - Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified - -
Maximum receive delay - 200 ns 200 ns 200 ns 200 ns 200 ns - -
Maximum seat height - 1.752 mm 3.937 mm 3.937 mm 1.752 mm 1.17 mm - -
Maximum slew rate - 0.7 mA 0.7 mA 0.7 mA 0.7 mA 0.7 mA - -
Nominal supply voltage - 5 V 5 V 5 V 5 V 5 V - -
technology - CMOS CMOS CMOS CMOS CMOS - -
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) - -
Terminal pitch - 1.27 mm 2.54 mm 2.54 mm 1.27 mm 0.65 mm - -
Maximum time at peak reflow temperature - 20 NOT SPECIFIED NOT SPECIFIED 20 20 - -
maximum transmission delay - 60 ns 60 ns 60 ns 60 ns 60 ns - -
Base Number Matches - 1 1 1 1 1 - -
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